Just to throw it in I am self tought on the nexstar as well as helicopters and beleive it is a wonderfull trainer however I got a really good deal on it and probably would not have paid full price for it since for instance the piliot assit is hardly ever used by anyone and the other bells and whistles.#1 dont let anyone tell you its nearly impossible to teach yourself because its not,although some instruction on my part would have be exellent but I am one of those stubborn ones that likes to do things myself.Yes it will be slower and hurt your pocket more but all in all you can say you done it yourself.just dont give it up no matter what happens.good luck and stay safe.